CN202253471U - AC LED tandem device - Google Patents

Abstract

An alternating current light emitting diode serial device comprises first to fifth LED serial groups, a constant current IC and an alternating current power supply, wherein each LED serial group is formed by connecting a plurality of light emitting diodes in series and is provided with a positive end and a negative end; the negative electrode of the first string group is connected with the positive electrode of the second string group; the negative electrode of the second serial group is connected with the positive electrode of the third serial group; the negative electrode of the third serial group is connected with the positive electrode of the fourth serial group; the negative electrode of the fourth serial group is connected with the negative electrode of the first serial group and the positive electrode of the second serial group; the positive pole of the fifth serial group is connected with the negative pole of the second serial group and the positive pole of the third serial group, the negative pole of the fifth serial group is connected with the positive pole of the first serial group, the constant current IC is connected with the negative pole of the third serial group and the positive pole of the fourth serial group, one end of the alternating current power supply is connected with the negative pole of the fifth serial group and the positive pole of the first serial group, and the other end is connected with the constant current IC. Each serial group not only has the function of providing light emission, but also has the purpose of rectification.

Description

AC LED tandem device

technical field

The utility model relates to an AC light-emitting diode series device with simple structure, low cost and effective power consumption reduction.

Background technique

Unlike fluorescent tubes, which are excited by electron beams to fluoresce, light-emitting diodes (LEDs) use the photoelectric effect produced by junction diodes to emit light. The wavelength of the light wave generated by the light-emitting diode is relatively stable, and the brightness is also easy to control through the current. In addition, light-emitting diodes have the characteristics of cold light, small size and power saving, and their lifespan is 10 times that of fluorescent tubes, so they gradually become the mainstream of the market.

The traditional light-emitting diode series device is supplied with current by an AC power supply. This current needs to be rectified by a bridge rectifier circuit first, and then flows through several light-emitting diodes, so that the light-emitting diodes can be turned on in both positive and negative periods of the AC power supply. glow.

However, in the design of the above-mentioned LED tandem device, since the overheating of the LEDs will affect the service life of the LEDs after long-term use, how to avoid power consumption and reduce the circuit components of the LEDs, thereby reducing the overall production cost and mold cost? Group miniaturization is a problem to be solved in the field of LED lamps.

Contents of the invention

The main purpose of the present invention is to provide an AC light-emitting diode tandem device with simple structure, low cost and effective reduction of power consumption.

In order to achieve the above purpose, the utility model is an AC light-emitting diode series device, including a first to fifth LED series groups, a constant current IC and an AC power supply, wherein each LED series group includes several light-emitting diodes Diodes are connected in series, and they are formed with positive and negative terminals; wherein the negative pole of the first LED series group is connected to the positive pole of the second LED series group; the negative pole of the second LED series group is connected to the positive pole of the third LED series group Connection; the negative pole of the third LED series group is connected to the positive pole of the fourth LED series group; the negative pole of the fourth LED series group is connected to the negative pole of the first LED series group and the positive pole of the second LED series group; the fifth LED series group The positive pole of the column group is connected to the negative pole of the second LED series group and the positive pole of the third LED series group, and the negative pole of the fifth LED series group is connected to the positive pole of the first LED series group, and the constant current IC is connected to the third LED series group. The cathode of the series group is connected to the anode of the fourth LED series group, one end of the AC power supply is connected to the cathode of the fifth LED series group and the anode of the first LED series group, and the other end is connected to the constant current IC.

When implemented, a current limiting resistor is included to modulate the current.

The beneficial technical effect of the utility model is that the first to fifth LED tandem groups not only have the function of providing light, but also have the purpose of rectification, so the number of electronic components in the overall structure can be effectively reduced, the cost is reduced, and the structural space is reduced. Furthermore, the power consumption can be reduced due to the reduction of electronic components.

In order to further understand the utility model, the following preferred embodiments are given below, and the specific composition of the utility model and the effects achieved are described in detail below in conjunction with the diagrams and figure numbers:

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

[Description of main component symbols]

1 first LED string group

2 second LED string group

3 The third LED string group

4 The fourth LED string group

5 Fifth LED string group

6 constant current IC

7 AC power

8 Current limiting resistors

Detailed ways

Please refer to FIG. 1 , which is an embodiment of the AC light-emitting diode tandem device of the present invention, which is composed of a first-fifth LED tandem group 1-5, a constant current IC6 and an AC power supply 7 .

Each of the LED series groups 1-5 includes several light-emitting diodes connected in series, which are formed with positive and negative terminals. Wherein, the negative pole of the first LED series group 1 is connected to the positive pole of the second LED series group 2; the negative pole of the second LED series group 2 is connected to the positive pole of the third LED series group 3; the third LED series group The negative pole of group 3 is connected to the positive pole of the fourth LED series group 4; the negative pole of the fourth LED series group 4 is connected to the negative pole of the first LED series group 1 and the positive pole of the second LED series group 2; the fifth LED The anode of the series group 5 is connected to the cathode of the second LED series group 2 and the anode of the third LED series group 3 , and the cathode of the fifth LED series group 5 is connected to the anode of the first LED series group 1 .

The constant current IC6 is connected to the negative pole of the third LED series group 3 and the positive pole of the fourth LED series group 4 .

One end of the AC power supply 7 is connected to the negative pole of the fifth LED series group 5 and the positive pole of the first LED series group 1 , and the other end is connected to the constant current IC6.

Therefore, during implementation, through the above-mentioned connection relationship of the first to fifth LED series groups 1 to 5, a bridge rectification function can be formed, replacing the existing design that must rely on a bridge rectifier circuit for rectification. Now, the first to fifth LED series groups 1 to 5 of the present invention not only have the function of providing light, but also have the purpose of rectification, so the number of electronic components in the overall structure can be effectively reduced, the cost is reduced, and the structural space is reduced. Furthermore, the power consumption can be reduced due to the reduction of electronic components.

Moreover, during implementation, the AC LED tandem device of the present invention further includes a current limiting resistor 8 for modulating the current.

The above is the specific embodiment of the utility model and the technical means used. According to the disclosure or teaching of this article, many changes and amendments can be derived. If the equivalent changes made according to the concept of the utility model, the When the resulting effect still does not exceed the essential spirit covered by the description and drawings, it shall be deemed to be within the technical scope of the utility model, and shall be stated first.

According to the content disclosed above, the utility model can indeed achieve the expected purpose of the invention, and provides an AC light-emitting diode tandem device, which has industrial utilization and practical value.

Claims (2)

1. An ac led string device, comprising:

the LED array comprises a first LED array group, a second LED array group, a third LED array group and a fourth LED array group, wherein each LED array group is formed by connecting a plurality of light emitting diodes in series and is provided with a positive end and a negative end; wherein,

the negative electrode of the first LED serial group is electrically connected with the positive electrode of the second LED serial group; the cathode of the second LED string group is electrically connected with the anode of the third LED string group; the negative electrode of the third LED string group is electrically connected with the positive electrode of the fourth LED string group; the negative electrode of the fourth LED string group is electrically connected with the negative electrode of the first LED string group and the positive electrode of the second LED string group; the anode of the fifth LED serial group is electrically connected with the cathode of the second LED serial group and the anode of the third LED serial group, and the cathode of the fifth LED serial group is electrically connected with the anode of the first LED serial group;

a constant current IC electrically connected to the cathode of the third LED string group and the anode of the fourth LED string group;

and one end of the alternating current power supply is electrically connected with the negative electrode of the fifth LED serial group and the positive electrode of the first LED serial group, and the other end of the alternating current power supply is connected with the constant current IC.

2. An ac led string device according to claim 1, including a current limiting resistor for modulating current.

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